Download pdf - Digital Wireless Headphone SystemSennheiser headphones sound exceptionally good at low and medium volume levels. Do not use the product in situations which require special attention

RS 185Digital Wireless Headphone System

Instruction Manual

RS 185 | 1

Contents

Contents

Important safety information ...................................................................... 2

The RS 185 digital wireless headphone system ........................................ 5

Package includes ............................................................................................ 6

Product overview ........................................................................................... 7Overview of the HDR 185 headphones ..................................................... 7Overview of the TR 185 transmitter .......................................................... 8Overview of LED indicators .......................................................................... 9

Putting the RS 185 into operation ............................................................ 12Setting up the transmitter ......................................................................... 12Connecting the transmitter to an audio source .................................... 13Connecting the transmitter to an AC wall outlet .................................. 17Inserting or replacing the rechargeable batteries ................................ 18Charging the rechargeable batteries ....................................................... 19Adjusting the headband ............................................................................ 20

Using your RS 185 headphone system ..................................................... 21Switching your wireless headphone system on .................................... 21Selecting an audio input ............................................................................. 22Adjusting the volume ................................................................................. 22Muting/unmuting the headphones ......................................................... 22Adjusting the balance ................................................................................. 23Controlling the input level of analog signals ......................................... 24Pairing headphones to the transmitter .................................................. 26Switching your wireless headphones off ................................................ 27

Cleaning and maintaining the RS 185 ...................................................... 28Replacing the ear pads ............................................................................... 28

Troubleshooting ........................................................................................... 29Sound problems ........................................................................................... 29Other problems ............................................................................................ 30Leaving the range of the transmitter ...................................................... 31Clearing the pair settings on the headphones ....................................... 31

Specifications ............................................................................................... 32

Manufacturer declarations ......................................................................... 33

Important safety information

2 | RS 185


� Read this instruction manual carefully and completely before using theproduct.

� Always include this safety guide when passing the product on to thirdparties.

� Do not use an obviously defective product.

Preventing damage to health and accidents

� Protect your hearing from high volume levels. Permanenthearing damage may occur when headphones are used athigh volume levels for long periods of time. Sennheiserheadphones sound exceptionally good at low and mediumvolume levels.

� Do not use the product in situations which require special attention(e.g. in traffic or when performing skilled jobs).

� Keep the headphones at least 10 cm/3.94” from cardiac pacemakers orimplanted defibrillators. The headphones contain magnets that gener-ate a magnetic field which could cause interference with cardiac pace-makers and implanted defibrillators.

� Do not use the product near water and do not expose it to rain or mois-ture to reduce the risk of fire or electric shock.

� Keep the product, accessories and packaging parts out of reach of chil-dren and pets to prevent accidents and choking hazards.

� Use only power supply units provided by Sennheiser.

Preventing damage to the product and malfunctions

� Always keep the product dry and do not expose it to extreme tempera-tures to avoid corrosion or deformation. The normal operating tem-perature is from 0 to 40°C/32 to 104°F.

� Use the product with care and store it in a clean, dust-free environ-ment.

� Do not use the product if it is obviously defective, if it has been droppedor if liquids or objects have gotten inside the product. In this case, con-tact a qualified specialist workshop or your Sennheiser service partnerto have the product checked.

� Switch the headphones off after use to conserve battery power.Remove the batteries if the product will not be used for extended peri-ods of time.

� Unplug the power supply unit from the AC wall outlet– to completely disconnect the product from the power source,

– during lightning storms, or

– when unused for long periods of time.

� Ensure that the power supply unit is– in a safe operating condition and easily accessible,

– properly plugged into the AC wall outlet,

– operated only within the permissible temperature range,

– not exposed to direct sunlight for longer periods of time in order toprevent heat accumulation.


RS 185 | 3

� Do not place your headphones on a glass dummy head, chair armrest orsimilar objects for long periods as this can widen the headband andreduce the contact pressure of the headphones.

� Varnish or furniture polish may degrade the feet of the transmitter,which could stain your furniture. You should therefore place the trans-mitter on a non-slip pad to avoid potential staining of furniture.

� Do not operate the product near heat sources.

� Clean the product only with a soft, dry cloth.

� Use only attachments/accessories/spare parts supplied or recom-mended by Sennheiser.

Intended use/Liability

This wireless headphone system is suitable for use with hi-fi systems, TVsets, and home cinema systems and supports both analog and digital sig-nals simultaneously.

This product is intended for private domestic use only. It is not suitable forcommercial use. This product is also not intended to be used with portableaudio devices.

It is considered improper use when this product is used for any applicationnot named in this instruction manual and the associated product guides.

Sennheiser does not accept liability for damage arising from abuse or mis-use of this product and its attachments/accessories.


4 | RS 185

Safety instructions for standard/rechargeable batteries

WARNING

In extreme cases, the standard/rechargeable batteries may leak and maycause the following hazards if abused or misused:

• explosion• fire• heat• smoke/gas

Keep away from children.

Do not heat above 70°C/158°F, e.g. do not expose to sunlight or throw into a fire.

Do not expose to moisture.

When not using rechargeable batteries for extended periods of time, charge them regularly (about every 3 months).

Do not mutilate or dismantle.

When not using the product for an extended period of time, remove the standard/rechargeable batteries.

Observe correct polarity.

Use only rechargeable batteries and chargers recommended by Sennheiser.

Pack/store standard/charged rechargeable batteries so that the terminals cannot contact each other – danger of shorting out/fire hazard.

Do not continue using defective standard/rechargeable batteries and dispose of them immediately.

Switch battery-powered products off after use.

Immediately remove standard/rechargeable batteries from an obviously defective product.

Charge rechargeable batteries at ambient temperatures between 10 and 40°C/50 and 104°F.

Dispose of standard/rechargeable batteries at special collection points or return them to your specialist dealer.

Do not charge standard batteries.

Do not mix standard and rechargeable batteries in the battery compartments.

LR03

HR03

The RS 185 digital wireless headphone system

RS 185 | 5

The RS 185 digital wireless headphone system

Created with the music lover in mind, the RS 185 now makes it possible toenjoy dynamic, high-fidelity Sennheiser sound at home without the hassleof wires. These innovative, ergonomically designed, wireless open head-phones deliver amazingly precise sound reproduction in uncompresseddigital quality even as you wander from room to room, and they are lightand comfortable enough for extended periods of use.

Furthermore, the conveniently located manual input level and balance con-trols make setting the listening levels to your individual preference a snap,so you’ll be able to fine-tune the details of each track in stunning acousticclarity. Just connect the multi-purpose transmitter to your home soundsystem (via optical or analog inputs) and lose yourself in the music.

Sennheiser’s RS 185: The right wireless choice for serious listeners.

Features • Wireless, open, circumaural headphones with uncompressed digital

audio transmission

• Exceptional digital audio clarity and transmission range of up to100 m/328 ft (line of sight)

• High-performance Sennheiser transducers for precise, thrilling sound

• Control the sensitivity of your analog input – choose between Auto-matic Level Control (ALC) mode to even out volume differences auto-matically or Manual Level Control (MLC) mode to manually adjust thesensitivity

• Supports analog and digital audio inputs and allows toggling betweenthe inputs

• Balance control located on the headset for convenient adjustments

• Multi-purpose transmitter – also functions as “easy-charge“ cradle anddocking station

• Multi-receiver transmission – transmitter supports up to two pairs ofheadphones simultaneously

• Ergonomic design for enhanced wearing comfort

• 2-year warranty

DigitalAnalog

Package includes

6 | RS 185

Package includes

HDR 185 headphones

TR 185 transmitter

Power supply unit with multi-country adapters (EU, UK, US, AU)

Low self-discharge NiMH rechargeable batteries, AAA size

Optical digital cable, 1.5 m

Stereo RCA cable, 1.2 m

Quick guide

Safety guide

SURR

LO

HI

BASS

US

EU

UK AU

Safety Guide

Quick Guide

Safety GuideSafety Guide

Product overview

RS 185 | 7

Product overview

Overview of the HDR 185 headphones

1

3

2

4

0

9

7

86

5

1 Headband

2 Charging contacts

3 Ear pads

4 Ear cups/Batterycompartments

5 LEVEL button for manual and auto-matic level controlselection

6 Balance L button

7 Balance R button

8 Volume – button

9 Volume + button

0 HDR power button

A HDR status LED

Product overview

8 | RS 185

Overview of the TR 185 transmitter

SURR

LO

HI

BASS

1

2

4

9

7

5

6

8

0

3

1 TR status LED

2 MLC rotary knob,for manual level controladjustment

3 ALC, MLC LEVEL LEDs, indicate the selected signal level control

4 LEVEL buttonto toggle between manual and automatic level controls

5 Charge status LED

6 Charging contacts

7 DIGITAL OPTICAL IN Digitaloptical audio input

8 AUDIO INPUT SELECTION switch,for digital or analog audio input selection

9 L, R RCA audio input,for analog audio input

0 DC 9V 0.3A socket for thepower supply unit

Product overview

RS 185 | 9

Overview of LED indicatorsThe LED indicators on the headphones and on the transmitter indicate thecurrent operating state. If you are not using the headphones, the LED indi-cators automatically dim after approx. 30 seconds to not disturb you.

LED indicators on the headphones

HDR status LED Meaning

The headphones are switched off.

The transmitter and headphones are connected.

The transmitter and headphones are connected and the rechargeable batteries are almost empty.

The headphones are disconnected from or cannot connect to the transmitter.

The headphones are disconnected from or cannot connect to the transmitter and the rechargeable batteries are almost empty.

1s1s

1s1s

Product overview

10 | RS 185

LED indicators on the transmitter

After taking the headphones from the holder of the transmitter, the chargestatus LED indicates the approximate operating time of the headphones:

SURR

LO

HI

BASS

1

4

2

3

1 Charge status LED Meaning

The transmitter is not charging.

The rechargeable batteries are being charged.

The rechargeable batteries are fully charged.

A charging/battery fault has been detected.

Charge status LED Operating time Battery capacity

up to 4 hours 0 to 25%

approx. 4 to 9 hours 25 to 50%



2 ALC LED MeaningThe Automatic Level Control (ALC) mode is deactivated.

The Automatic Level Control (ALC) mode is activated.

Product overview

RS 185 | 11

3 MLC LED MeaningThe Manual Level Control (MLC) mode is deactivated.

The Manual Level Control (MLC) mode is activated.

The Manual Level Control (MLC) mode is activated but the input signal has exceeded the maximum permitted level.

32 ALC and MLC LED MeaningWhen the ALC and MLC LEDs flash three times, the optical audio input is selected. The level adjustment is only necessary for the analog audio input.

ALC MLC

4 TR status LED MeaningThe transmitter is connected to the AC wall outlet.

The transmitter is in standby mode.

The transmitter and headphones are connected.

The transmitter detects an incompatible digital audio streaming input (see page 29).

1s

1.5 s1.5 s

Putting the RS 185 into operation

12 | RS 185


Setting up the transmitter� Choose a suitable place near your audio source.

� Separate the transmitter and other wireless devices in a room by atleast 50 cm/20” to avoid interference.

� Do not place the transmitter close to metal objects such as shelf bars,reinforced concrete walls, etc. as this can decrease the cover range ofthe transmitter.


RS 185 | 13

Connecting the transmitter to an audio sourceYou can simultaneously connect 2 different audio sources (e.g. a TV and astereo hi-fi system) to the transmitter. The transmitter features a digitalas well as an analog audio input. If you connect 2 audio sources, you cantoggle between them using the AUDIO INPUT SELECTION switch (seepage 22).

� Switch your audio source off before connecting the transmitter.

� Check the connection options available for your audio source (audiooutput, usually marked “OUT”).

� Select the corresponding connection cable and, if necessary, a suitableadapter.

� Depending on the connection option selected, go to the respectivechapter and follow the instructions on how to connect the transmitterto an audio source.

You can also refer to the beginner’s video guides on how to connect your digital wireless headphone system to a TV at www.sennheiser.com/how-to-videos.

Connection options available for your audio source

Connection cable Page

Optical (digital) Optical digital cable 14

RCA (analog) Stereo RCA cable 15

3.5 mm or 6.3 mm/¼“ jack socket (analog)

2 RCA plugs to stereo audio cable with adapter 3.5 mm jack socket (cables/adapters to be ordered separately)

16

You can purchase accessories and adapters from your localSennheiser partner.

A

B

C


14 | RS 185

Connection option A: Optical (digital)

To achieve the best possible listening experience, we recommended thatyou connect your RS 185 headphone system to your home cinema or hi-fisystem using the supplied optical digital cable.

Your wireless headphone system allows digital audio streaming using onlyPCM audio output from devices connected through the optical digital inputDIGITAL OPTICAL IN. Refer to the sound menu or the instruction manual ofyour device to change from another audio stream (e.g. Bitstream) to PCM.


� Pull off the clear protective caps from both plugs before connecting thecable.

� Connect one end of the optical digital cable to the DIGITAL OPTICAL INinput of the transmitter and the other end to the optical output of youraudio source.

A

Digital Digital sound output PCM Bitstream

Sound menu

*Sound menu may vary

OPTICAL

Digital


RS 185 | 15

Connection option B: RCA (analog)


� Connect the RCA plugs to the RCA inputs of the transmitter. Connectthe red RCA plug to the red RCA socket and the white RCA plug to thewhite RCA socket.

� Connect the RCA plugs to the RCA outputs of your audio source (in mostcases “AUDIO OUT“). Connect the red RCA plug to the red RCA socketand the white RCA plug to the white or black RCA socket.

B

Analog

R

LAUDIO OUT


16 | RS 185

Connection option C: 3.5 mm or 6.3 mm/¼“ jack socket (analog)

Some TV models mute the loudspeakers when you connect the transmitterto the headphone socket. Check in the menu of your TV to see if the mutingfunction can be deactivated. Alternatively, connect the TV and the trans-mitter using a different option (A or B).


� Connect the RCA plugs to the RCA inputs of your transmitter. Connectthe red RCA plug to the red RCA socket and the white RCA plug to thewhite RCA socket.

� If necessary, connect the 6.3 mm/¼“ adapter jack plug onto the3.5 mm plug of the RCA cable.

� Connect the 3.5 mm plug of the RCA cable to the headphone socket ofyour audio source.

C

Adjust the volume of the headphone socket on your audio source toat least about the medium level.

Analog

* Cable and adapter not included

PHONES

*

*

VOLUME


RS 185 | 17

Connecting the transmitter to an AC wall outlet1 Select a suitable country adapter and slide it onto the power supply

unit until it locks firmly in place.

2 Connect the power supply unit connector to the power input socket ofthe transmitter.

3 Plug the power supply unit into an AC wall outlet.The TR status LED lights up for a second. The transmitter is instandby mode.

1 STANDBY

3

2

STANDBY

US

EU

UK

AU


18 | RS 185

Inserting or replacing the rechargeable batteries1 Lightly twist the ear pads counterclockwise until you overcome a slight

resistance.

2 Lift the ear pads off the ear cups to reveal the battery compartments.

3 Insert the rechargeable batteries into the compartments. To replace thebatteries, pull the batteries out of the compartments and insert thenew ones. Be sure to observe correct polarity when inserting the bat-teries. Please dispose old batteries as special waste or return them toyour specialist dealer.

4 Hook the ear pads onto the ear cups. As you put back the ear pads,observe the L (left) and R (right) markings on the rear of the ear pads.

5 Twist the ear pads clockwise until you hear a click sound. Ensure thatthey are locked firmly onto the ear cups.

You can also power the headphones using standard batteries (AAAsize, 1.5 V). Note however, that standard batteries are not recharge-able, and if you are using non-rechargeable batteries, you must notplace the headphones on the headphones holder.

1 2

3 4 5

NEW


RS 185 | 19

Charging the rechargeable batteries

In general, a complete charging cycle takes about 8.5 hours. However,before using the headphones for the first time, charge the rechargeablebatteries for at least 16 hours without interruption to optimize the perfor-mance of the batteries.

When the rechargeable batteries are almost empty, the HDR status LEDturns red and you hear beeps in the headphones. The headphones switchoff after few minutes.

� Place the headphones on the headphones holder of the transmitter.You may place the headphones on either side provided that thecharging contacts of the headphones and the transmitter connect.The headphones automatically switch off and the Charge status LEDon the transmitter lights up red. When the rechargeable batteries arefully charged, the Charge status LED turns green.

CAUTION Danger of damage to the headphones!If you insert non-rechargeable batteries into the batterycompartments, the batteries may leak during charging andcan damage your headphones.

� Do not place the headphones on the headphones holder ifyou are using non-rechargeable batteries.

8.5h

When not in use, place the headphones on the headphones holder toensure that batteries are fully charged when needed. The transmit-ter utilizes an intelligent battery charging technology that preventsovercharging.

After taking the headphones from the holder of the transmitter, thecharge status LED indicates the approximate operating time of theheadphones (see page 10).

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

100%

LEVEL


20 | RS 185

Adjusting the headbandFor good sound quality and best possible wearing comfort, the headbandhas to be adjusted to properly fit your head. The headphones feature anadjustable headband with a snap-in locking mechanism for easy adjust-ment.

� Wear the headphones so that the headband runs over the top of yourhead. Observe the L (left) and R (right) markings on the outer head-band when putting the headphones on.

� Adjust the length of the headband until– your ears are comfortably covered by the ear pads,

– you feel even, gentle pressure around your ears,

– a snug fit of the headband on the head is ensured.

LEVEL

LEVEL

R

R

Using your RS 185 headphone system

RS 185 | 21


Switching your wireless headphone system on

1 Switch your audio source on.

If you are using the headphone socket (see page 16) to connect to youraudio source, adjust the volume of the headphone socket on your audiosource (e.g. TV) to at least the medium level.

2 Push the AUDIO INPUT SELECTION switch up or down to select youraudio source (see page 22).The status LED on the transmitter lights up green.

3 Press and hold the HDR power button for approx. 2 seconds to switchthe headphones on.The transmitter in standby mode recognizes the active paired head-phones and automatically transmits a signal. The status LEDs on thetransmitter and the headphones light up green.

WARNINGDanger due to high volume levels!

Listening at high volume levels can lead to permanent hearingdefects.

� Before putting the headphones on and before toggling betweenyour audio inputs, adjust the volume on the headphones to alow level. Toggling between different inputs may cause enor-mous volume jumps that can damage your hearing.

� Do not expose yourself to high volume levels for long periods oftime.

VOLUME

If the headphones are brought outside the transmission range or ifthere is no audio signal received from the transmitter for more than5 minutes, the headphones switch off automatically.

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

2s AUTO-ON

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

ONON

1 2

3

Analog

Digital


22 | RS 185

Selecting an audio inputIf both analog and digital audio inputs are connected to different audiosources, the headphone system enables you to toggle between the twoinputs.

� Push the AUDIO INPUT SELECTION switch up to listen to an audio sourceconnected to the digital optical input (see page 14).

� Push the AUDIO INPUT SELECTION switch down to listen to an audiosource connected to the analog input (see pages 15 and 16).

Adjusting the volume� Press the Volume + button or the Volume – button repeatedly until the

volume is adjusted to the desired level. When the minimum or maxi-mum volume setting is reached, you hear a beep in the headphones.

Muting/unmuting the headphones� Press the HDR power button to mute the headphones.

� Press the HDR power button or any of the Volume +/–, Balance L/Rbuttons to cancel the muting.

Digital

Analog

LEVELLEVEL

VolVol

If the headphones are muted for 15 minutes, the headphones switchoff automatically to save energy.

LEVEL LEVEL


RS 185 | 23

Adjusting the balanceThe balance buttons allow you to adjust the volume on the left or rightchannel of your headphones. Adjust the balance so that you hear comfort-ably or equally well with both ears.

� Press the Balance R button or the Balance L button to increase ordecrease the volume on your right (R) or left (L) ear.When the minimum or maximum balance setting is reached, you heara beep in the headphones.

� Press the Balance R/L buttons simultaneously to equalize the volumeon both ears.

LEVEL

LEVEL

LEVEL


24 | RS 185

Controlling the input level of analog signalsThe RS 185 headphone system offers two modes (Automatic Level ControlALC/Manual Level Control MLC) for controlling the input level of analogsignals going through the system.

� Press the LEVEL button on the headphones or on the transmitter. The audio level toggles between the automatic and manual modes, asindicated by the ALC, MLC LEDs.

Level control Definition

Automatic Level Control ALC

The Automatic Level Control ALC automatically adjusts the sensitivity of the analog input. Using ALC avoids undesired volume jumps when you switch from one audio device to another, or when you click from one music track to the next on your playlist.

Manual Level Control MLC

The Manual Level Control MLC allows you to manually adjust the sensitivity of the analog input. Proper setting of the input level contributes to excellent and compression-free audio experience.

MLC

ALC

LEVELLEVEL

OR

ALC ON

ALC

LEVEL

MLC

MLC ON

ALC

LEVEL

MLC


RS 185 | 25

Using the Manual Level Control (MLC) mode

Follow these steps to adjust the signal of your analog audio input.

1 Press the LEVEL button on the headphones or on the transmitter untilthe Manual Level Control (MLC) mode becomes active. The MLC LED indicator lights up green. If the audio level from yoursource is too high and exceeds the maximum permitted level, the soundgets distorted and the MLC LED indicator changes to red.

2 Use the MLC rotary knob to manually adjust the audio level. If themaximum permitted level is exceeded, turn the knob counterclockwiseand position it to the point just before where the MLC LED indicatorchanges to red. This point means that you have reached the optimumsetting for the audio level.

WARNINGDanger due to high volume levels

Before putting on the headphones and before toggling betweenthe level modes, adjust the volume on the headphones to a lowlevel. Toggling between different modes may cause an enormousvolume jump that can possibly damage your hearing.

1 2

MLC

ALC

LEVEL

LEVEL

OR

MLC

ALC

LEVEL

MLC

MAXMIN

MIN MAX

MLC

MLC ON

ALC

LEVEL

MLC


26 | RS 185

Pairing headphones to the transmitterThe headphones and the transmitter enclosed in this package have beenpaired from the factory. The following procedure is only necessary if youhave cleared all pairing information from your wireless headphone systemand you want to revive the lost pairing, or if you want to pair another setof headphones to the transmitter.

You can connect up to 2 paired headphones simultaneously with yourTR 185 transmitter.

� Place the headphones on the headphones holder of the transmitter fora second.The Charge status LED on the transmitter lights up red. The head-phones are paired to the transmitter.

LEVEL

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

1s


RS 185 | 27

Switching your wireless headphones offThere are two ways to switch your wireless headphones off.

� Press and hold the HDR power button for approx. 2 seconds.The headphones switch off. If no other pair of active wireless head-phones is connected to the transmitter, the transmitter switches tostandby mode. All LEDs are off.

� Place the headphones on the headphones holder of the transmitter.The headphones switch off and the charging process starts (seepage 19). If no other pair of active wireless headphones is connected tothe transmitter, the transmitter switches to standby mode.

A

2s

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

HDR 185

LEVEL

OFF AUTO-STANDBY

B

To disconnect the transmitter from the power source, unplug thepower supply unit from the AC wall outlet.

LEVEL

MLC

ALC

LEVEL

MLC

MAXMIN

LEVEL

AUTO-STANDBY

OFF

Cleaning and maintaining the RS 185

28 | RS 185

Cleaning and maintaining the RS 185

To clean the wireless headphone system:

� Switch your wireless headphone system off and disconnect the trans-mitter from the AC wall outlet before cleaning.

� Clean the product only with a soft, dry cloth.

Replacing the ear padsFor reasons of hygiene, you should replace the ear pads from time to time.Spare ear pads are available at your local Sennheiser partner.

1 Lightly twist the ear pads counterclockwise until you overcome a slightresistance.

2 Lift the ear pads off the ear cups and dispose of them properly.

3 Hook the new ear pads onto the ear cups. Observe the L (left) andR (right) markings on the rear of the ear pads.

4 Twist the ear pads clockwise until you hear a click sound. Ensure thatthey are locked firmly onto the ear cups.

CAUTIONLiquids can damage the electronics of the product!

Liquids entering the housing of the product can cause a short-circuit anddamage the electronics.

� Keep all liquids away from the product.� Do not use any cleansing agents or solvents.

You can have the headband padding replaced by the repair service.Please contact your Sennheiser partner.

1 2 3 4

Troubleshooting

RS 185 | 29

Troubleshooting

Sound problems

Problem Possible cause Possible solutions Page

No sound

Headphones are switched off. Switch the headphones on. 21

No power connection.Check the connection of the power supply unit.

17

Headphones are muted. Deactivate the muting function. 22

Audio plug is not properly connected. Check the audio plug connection. 13

Audio source is switched off. Switch the audio source on. –

Volume of the analog audio source is either set to the minimum or is on mute.

Increase the volume on the audio source to at least a medium level/Deactivate the muting function from the audio source.

–

Audio cable is defective. Replace the audio cable. –

Headphones are not correctly paired with the transmitter (e.g. additional headphones).

Pair the headphones with the transmitter again.

26

Wrong audio input is selected. Select the other audio input. 22

Digital audio connection uses incompatible data transmission settings.

Set the digital audio output of your device/audio source to “PCM”, with a sampling rate of max. 96 kHz (see the instruction manual of your audio source).

–

Sound dropouts/no sound

Headphones are out of the transmitter’s range.

Reduce the distance between headphones and transmitter.

–

Signal is shielded.Remove obstacles between the transmitter and headphones.

–

There are interfering devices(e.g. WLAN routers, Bluetooth devicesor microwaves) in the vicinity.

Change the position of the transmitter or of the headphones.

12

Ensure that the transmitter is separated from other wireless devices by at least 50 cm/20”.

–

Sound is too low

Headphone volume is adjusted too low. Increase the volume on the headphones. 22

Volume of the analog audio source is adjusted too low.

Increase the volume on the analog audio source to at least a medium level.

–

Hear echoes and TV tone when using headphones

Some TVs can adjust a delay or latency of the audio signal for the digital audio output.

Check the audio output settings of your TV and set the latency to “0”.

–

Sound only on one ear

Balance is misadjusted. Adjust the balance. 23

Audio cable is not properly connected. Check the plug connection. 13

Audio cable is defective. Replace the audio cable. –

Sound is distorted

Signal of the audio source is distorted. Reduce the volume of the audio source. –

Headphone volume is adjusted too high. Reduce the volume on the headphones. 22

Volume of the analog audio source is adjusted too high.

Decrease the volume of the analog audio source at least to a medium volume level.

–

Adjust the input signal by using the MLC rotary knob.

25

Troubleshooting

30 | RS 185

Other problems

If you encounter a problem that is not listed in the table, or if the solutions provided do not work, please visitthe RS 185 product page at www.sennheiser.com for the most up-to-date list of frequently asked questions.

You may also contact your local Sennheiser service partner for assistance. To find a Sennheiser service partnerin your country, visit www.sennheiser.com.

Problem Possible cause Possible solutions Page

Transmitter does not turn on

No power connection.Check the connection of the power supply unit.

17

Headphones do not turn on

The rechargeable batteries are almost empty.

Recharge the rechargeable batteries. 19

No batteries inside the battery compartments.

Insert the rechargeable batteries. 18

The rechargeable batteries are inserted the wrong way round.

Remove the rechargeable batteries from the headphones and reinsert them again. Observe correct polarity.

18

Operating time decreases

The rechargeable batteries are exhausted.

Replace the rechargeable batteries with new ones.

18

You hear beeps in the headphones

The rechargeable batteries are almost empty.

Recharge the rechargeable batteries. 19

Headphones cannot be connected to the transmitter

Distance to the transmitter is too large. Reduce the distance to the transmitter. –

Headphones are not paired to the transmitter.

Pair the headphones to the transmitter. 26

Another set of headphones is being charged so I can‘t pair my second headphones.

Perform a proximity pairing:1. Place the headphones as close as possible to the transmitter.2. Switch the headphones on.3. Press the Volume +/- buttons simultaneously for about 7 seconds.

–

Headphones are not compatible.Use Sennheiser HDR 165, 175, 185, or 195 wireless headphones only.

–

MLC LED flashes red

Input signal is excessively high.

Press the LEVEL button to activate the automatic level control.

24

Adjust the input signal by using the MLC rotary switch.

25

The ALC and MLC LEDs flash green thrice

You pressed the LEVEL button and the digital audio input is selected.

ALC or MLC is only necessary when using the analog audio input.

–

Troubleshooting

RS 185 | 31

Leaving the range of the transmitterThe range of the transmitter largely depends on environmental conditionssuch as wall thickness, wall composition etc. If the headphones leave therange of the transmitter, the audio first cuts out occasionally until it finallycuts out completely.

If you re-enter the transmission range within 5 minutes, the connection is automatically re-established.If you spend more than 5 minutes outside the transmission range, the headphones switch off automatically.

Clearing the pair settings on the headphones1 Press the Volume +/- buttons simultaneously and hold for 2 seconds.

The HDR status LED blinks red rapidly.

2 Press the HDR power button while continuously holding the Volume+/- buttons. Release all 3 buttons. The HDR status LED lights up green or red, depending on the batterycondition, and starts blinking slowly. The pairing settings on the head-phones are cleared.

LEVEL

MLC

ALC

LEVEL

MLC

MAXMIN

1 2

L RLEVEL

LEVEL

2s

Specifications

32 | RS 185

Specifications

RS 185 headphone system

HDR 185 headphones

TR 185 transmitter

Sennheiser NT 9-3AW power supply unit

Carrier frequency 2.40 to 2.48 GHz

Modulation 8-FSK Digital

SNR

Analog input: ALC typ. 85 dBA at 1 VrmsMLC ≥ 90 dBA

Digital input: > 90 dBA

RF output power max. 10 dBm Class 1

Transmission range up to 100 m/328 ft line of sight

Max. number of simultaneously connected headphones

2

Temperature rangeOperation: 0°C to +40°C/32°F to 104°FStorage: -25°C to +70°C/-13°F to 158°F

Relative humidityOperation: 10 to 80%, non condensingStorage: 10 to 90%

Transducer principle circumaural, open

Transducer system dynamic, neodymium magnets

Frequency response 17 Hz to 22 kHz

Max. SPL max. 106 dB at 1 kHz, 3% THD

THD < 0.5% at 1 kHz, 100 dB SPL

Operating time up to 18 hours

Charging time of rechargeable batteries

up to 8 hours 30 min

Power supply2 AAA size low self-discharge NiMH rechargeable batteries, 1.2 V, 820 mAh

Weight (incl. batteries) approx. 310 g

Dimensions (W x H x D) approx. 17 cm x 20 cm x 9.5 cm

ConnectionsDigital: optical Analog: RCA

Power supply 9 V , 300 mA

Power consumptionOperation: typ. 4 WStandby mode: ≤ 0.3 W (without charging)

Dimensions (W x H x D) approx. 12.7 cm x 23.4 cm x 10.9 cm

Nominal input voltage 100–240 V~

Mains frequency 50–60 Hz

Nominal output voltage 9 V

Nominal output current 300 mA

Temperature rangeOperation: 0 °C to +40 °CStorage: -40 °C to +85 °C

Relative humidityOperation: 0 to 90 %, non condensingStorage: 0 bis 90 %

Manufacturer declarations

RS 185 | 33


Warranty

Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on thisproduct.

For the current warranty conditions, please visit our website atwww.sennheiser.com or contact your Sennheiser partner.

FOR AUSTRALIA ONLY

Sennheiser goods come with guarantees that cannot be excluded underthe Australian Consumer Law. You are entitled to a replacement or refundfor a major failure and compensation for any other reasonably foreseeableloss or damage. You are also entitled to have the goods repaired orreplaced if the goods fail to be of acceptable quality and the failure doesnot amount to a major failure.

This warranty is in addition to other rights or remedies under law. Nothingin this warranty excludes, limits or modifies any liability of Sennheiserwhich is imposed by law, or limits or modifies any remedy available to theconsumer which is granted by law.

To make a claim under this warranty, contact Sennheiser Australia Pty Ltd,Unit 3, 31 Gibbes Street Chatswood NSW 2067, Australia; Phone: (02) 9910 6700, email: [email protected]

All expenses of claiming the warranty will be borne by the person makingthe claim.

The Sennheiser International Warranty is provided by Sennheiser AustraliaPty Ltd (ABN 68 165 388 312), Unit 3, 31 Gibbes Street Chatswood NSW2067, Australia.

In compliance with the following requirements

• WEEE Directive (2012/19/EU)

Please dispose of this product at the end of its operational life-time by taking it to your local collection point or recycling centerfor such equipment.

• Battery Directive (2013/56/EU)

The supplied standard/rechargeable batteries can be recycled.Please dispose of them as special waste or return them to yourspecialist dealer. In order to protect the environment, only dis-pose of exhausted batteries.

CE Conformity

• R&TTE Directive (1999/5/EC)

• EMC Directive (2014/30/EU)

• Low Voltage Directive (2014/35/EU)

• ErP Directive (2009/125/EC)

• RoHS Directive (2011/65/EU)

The CE Declaration of Conformity is available on our website atwww.sennheiser.com.


34 | RS 185

Statements regarding FCC and Industry Canada

This device complies with Part 15 of the FCC Rules and with RSS-210 ofIndustry Canada. Operation is subject to the following two conditions:(1) this device may not cause harmful interference, and (2) this devicemust accept any interference received, including interference that maycause undesired operation.

This equipment has been tested and found to comply with the limits for aClass B digital device, pursuant to Part 15 of the FCC Rules. These limits aredesigned to provide reasonable protection against harmful interference ina residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance withthe instructions, may cause harmful interference to radio communications.However, there is no guarantee that interference will not occur in a partic-ular installation. If this equipment does cause harmful interference toradio or television reception, which can be determined by turning theequipment off and on, the user is encouraged to try to correct the inter-ference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that towhich the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

CAN ICES-3 (B)/NMB-3(B)

RF Radiation Exposure Information

Since the radiated output power of this device is far below the FCC radiofrequency exposure limits, it is not subjected to routine RF exposure eval-uation as per Section 2.1093 of the FCC rules.

Trademarks

Sennheiser is a registered trademark of Sennheiser electronic GmbH & Co. KG.

Other product and company names mentioned in this instruction manual maybe the trademarks or registered trademarks of their respective holders.

SENNHEISER Model No: RS 185

FCC Declaration of Conformity (DoC)

We, Sennheiser Electronic Corporation One Enterprise Drive • Old Lyme • CT 06371 • USA Tel: +1 (860) 434 9190 Fax: +1 (860) 434 1759

declare the above device comply with the requirements of Federal Communications Commission.

This device complies with Part 15 of the FCC rules. Operation is subjected to the following two conditions: 1) This device may not cause harmful interference, and 2) This device must accept any interference received, including interference that may cause undesired operation.

Responsible Party: Greg Beebe

Sennheiser electronic GmbH & Co. KG

Am Labor 1, 30900 Wedemark, Germany www.sennheiser.com

Publ. 03/16, A03

Important safety informationThe RS 185 digital wireless headphone systemPackage includesProduct overviewOverview of the HDR 185 headphonesOverview of the TR 185 transmitterOverview of LED indicators

Putting the RS 185 into operationSetting up the transmitterConnecting the transmitter to an audio sourceConnecting the transmitter to an AC wall outletInserting or replacing the rechargeable batteriesCharging the rechargeable batteriesAdjusting the headband

Using your RS 185 headphone systemSwitching your wireless headphone system onSelecting an audio inputAdjusting the volumeMuting/unmuting the headphonesAdjusting the balanceControlling the input level of analog signalsPairing headphones to the transmitterSwitching your wireless headphones off

Cleaning and maintaining the RS 185Replacing the ear pads

TroubleshootingSound problemsOther problemsLeaving the range of the transmitterClearing the pair settings on the headphones

SpecificationsManufacturer declarations